As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: THE EMERGENCY DOME LIGHT FAILED OPERATIONAL CHECK IAW AMM 33-51-00-710-801 STEP C(3)(A)1 TROUBLESHOT FAULT BY PERFORMING POWER CHECK IN THE LIGHT TERMINAL AND FOUND 6V DC, THIS SHOWS THAT THE LIGHT LAMP IS FAULTY. MAINTENANCE REPLACED THE LAMP WITH A SERVICEABLE ONE IAW 33-14-01.